The incision type and size is almost similar to traditional hip replacement procedure. First the socket is prepared by shaving of the cartilage. A suitable sized socket is pressed into the bone. The damaged layer of the hip bone is also removed and an appropriate sized head is fixed onto the bone using bone cement which fills in any gaps between the bone and the head. The surgery for hip resurfacing is similar but not identical to the traditional hip replacement. Hip resurfacing surgery conserves, rather than removes, the thigh-bone, it may be considered a bone conserving procedure compared to traditional hip replacement surgery Hip resurfacing surgery is, in some ways, a more demanding surgical technique for the surgeon.
The advantages of Hip resurfacing are that the Femoral head and canal can be preserved along with eliminating the risk of micro-fracture of femur with un-cemented stem implantation. The larger size of implant ball, reduces the risk of dislocation significantly. Recovery is far better in comparison with patients undergoing total hip replacement.
Stress is transferred in a natural way along the femoral canal and through the head and neck of the femur. With the standard THR, some patients experience thigh pain as the bone has to respond and reform to less natural stress loading.
Use of metal rather than plastic reduces osteolysis and associated early loosening risk. Use of metal has low wear rate with expected long implant lifetime.
Proper positioning also is very important, dislocating, exposing and preparing the femoral head for re-shaping is time consuming.
Spinal anesthesia is used for this procedure; however a combination of epidural and general anesthesia is also used.